1 import string
2
3 from Bio import Alphabet, Seq
4 from Bio.Alphabet import IUPAC
5
7 - def __init__(self, dna_alphabet, rna_alphabet):
10
12 assert dna.alphabet == self.dna_alphabet, \
13 "transcribe has the wrong DNA alphabet"
14 s = dna.data
15 return Seq.Seq(string.replace(s, "T", "U"), self.rna_alphabet)
17 assert rna.alphabet == self.rna_alphabet, \
18 "back transcribe has the wrong RNA alphabet"
19 s = rna.data
20 return Seq.Seq(string.replace(s, "U", "T"), self.dna_alphabet)
21
22 generic_transcriber = Transcribe(Alphabet.generic_dna,
23 Alphabet.generic_rna)
24 ambiguous_transcriber = Transcribe(IUPAC.ambiguous_dna,
25 IUPAC.ambiguous_rna)
26 unambiguous_transcriber = Transcribe(IUPAC.unambiguous_dna,
27 IUPAC.unambiguous_rna)
28